I do the same thing you want to do. The only way I have found to make it work is to manually change the author's name to last, first by using the edit metadata function ('e') after I add the book. I also must change it (again) if I download metadata. Be sure to also set the author sort field to (probably) the same value.
According to the popup help text, the option you are playing with only works if the author's name is being inferred from the file name. If you are adding a book containing metadata, then the author's name will come from that.
Note: I have also discovered that when using the bulk metadata editor (select multiple files and press 'e'), I must enter the author's name in both the author and the author sort field. If I do not, then the author sort field is changed to the wrong value (firstname, lastname,), even if I do not check the box.
|